September weather forecastNjardvik, Iceland

September

Weather in September

As summer gives way to autumn in Njardvik, September introduces a shift in the town's climate. While temperature begins its initial dip, signaled by the end of August, the purple hues of autumn paint the cityscape. However, the rainfall records a slight increase to 94mm (3.7"), adding a drizzle to the chilling winds. The sea temperature marks a decrease as the season enhances. Despite the reduction in daylight hours, September's weather displays a unique blend of the fading summer shades and the upcoming chill.

Temperature

A moderate decline in average high-temperatures is noted in September, moving from a fresh 12°C (53.6°F) in August to a frosty 9°C (48.2°F). Njardvik's nighttime temperature in September experiences a slight dip from daytime highs, falling to an average of 5°C (41°F).

Rainfall

During September, Njardvik regularly aggregates up to 94mm (3.7") of precipitation. During the entire year, Njardvik aggregates up to 1076mm (42.36") of precipitation.

Sea temperature

In Njardvik, in September, the average water temperature is 10°C (50°F).
Note: Danger awaits those who swim in 10°C (50°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.

Daylight

In Njardvik, Iceland, the average length of the day in September is 13h and 0min.
On the first day of September, sunrise is at 06:15 and sunset at 20:44. On the last day of the month, sunrise is at 07:37 and sunset at 19:02 GMT.

Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Njardvik, 9°C (48.2°F) is the average high-temperature and 5°C (41°F) is the average low-temperature during September.

During September, Njardvik regularly aggregates up to 94mm (3.7") of precipitation.

In Njardvik, in September, the average water temperature is 10°C (50°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

The average day length in September is 13h and 0min.

On the first day of September in Njardvik, sunrise is at 06:15 and sunset at 20:44. On the last day of the month, sunrise is at 07:37 and sunset at 19:02 GMT.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

12°C

9°C

6°C

Average low temperature

Average rainfall

Average sea temperature

Average daylight

Average temperature in September
Njardvik, Iceland

Average high temperature in September: 9°C

The warmest months (with the highest average high temperature) are July and August (12°C).
The months with the lowest average high temperature are January, February and December (2°C).

Average low temperature in September: 5°C

The months with the highest average low temperature are July and August (8°C).
The coldest month (with the lowest average low temperature) is January (-2°C).

Average rainfall in September
Njardvik, Iceland

Average rainfall in September: 94mm

The wettest month (with the highest rainfall) is October (114mm).
The driest months (with the least rainfall) are June and July (64mm).

Average sea temperature in September
Njardvik, Iceland

Average sea temperature in September: 10°C

The best months for swimming (with the highest average sea temperature) are July and August (11.5°C).
The coldest month (with the lowest average sea temperature) is March (5.9°C).

Average daylight in September
Njardvik, Iceland

Average daylight in September: 13h and 0min

The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 30min).